We got our first kill last night. I went with HotW for Hurricane spam on the adds at the end, but also for the raid saving Tranq. If you have 3-4 healers in Huddle it can save a good attempt. I didn't use wrath spam at the start, but with the haste buff it may be pretty decent (no idea for sure).

Thrash is amazing for the adds too. Try and time refreshing it on the boss so you can get them all bleeding. If you have the energy Rake on a few of them is really good as well.

I wouldn't use DoC on this fight till your raid team has it on farm. The end of the fight can get really crazy with both adds, and with healing needs. For progression having the extra flexability will be better then you having slightly higher single target dps.